How I Analyze a Property’s Repair History Before Buying

Before I make an offer on any rental property, I want to see at least 10 years of repair records, not just the current condition report the agent hands me. I learned this the hard way on my third property, where a freshly painted exterior was hiding a roof that hadn’t been touched in 22 years – I ended up spending 1.8 million yen on a re-roof just 14 months after closing.

Now, before I even schedule a viewing, I ask for the maintenance ledger. If the seller or agent can’t produce one, that absence tells me almost as much as the document itself would.

Why the paper trail matters more than the walkthrough

A 30-minute walkthrough shows you the last coat of paint, not the 15 years underneath it. Across my 9 properties, the repairs that actually protect cash flow – roofing, plumbing risers, exterior waterproofing – are exactly the ones a buyer can’t see without records. I treat the repair history as a second inspection, one that covers years the physical inspection simply can’t reach. A building can look freshly painted and still be carrying 20 years of postponed structural work underneath, and no amount of walking the halls will tell you that.

I also compare the repair ledger against the building’s age. A 30-year-old wood-frame building with almost no recorded repairs isn’t lucky, it’s overdue. I’ve started assuming that every major system has a natural service life, and I check the paperwork against that life expectancy rather than trusting a clean-looking file at face value.

Where I actually get the documents

In Japan, this usually means asking for the shuzen rireki (repair history) file from the management company or, for a building with no manager, directly from the current owner. I request three things every time:

• Itemized invoices for any repair over 100,000 yen, going back at least 10 years
• The most recent kasai hoken (fire insurance) claim history, if any
• Minutes from owners’ association meetings for the past 5 years, if it’s a multi-unit building

About 1 in 4 sellers can only produce a partial file. That’s not automatically a dealbreaker, but it changes how I price my offer, which I’ll get to below.

The five systems I check first

I don’t read every line of every invoice equally. I go straight to the five items that cause 80% of the unplanned costs I’ve dealt with over 15 years of self-managing these properties: roof condition and last re-roof date, exterior wall coating and caulking (gaiheki), water heater age, plumbing pipe material and any leak history, and the electrical panel’s amperage and last upgrade. If a roof was last redone more than 18 years ago, I budget for a replacement within my first 3 years of ownership, full stop – no exceptions, regardless of how good it looks from the ground.

Water heaters are the one I see buyers overlook most often. A standard unit in Japan lasts roughly 10 to 15 years, and replacing one runs me between 150,000 and 300,000 yen depending on the model and whether the piping needs rework too. If the file shows the unit was installed 13 years ago and never mentioned again, I count on replacing it in year one, not year ten. Electrical panels are similar – anything still running on an old 30-amp contract in a building with modern appliances is a signal the whole panel needs an upgrade, which typically runs 80,000 to 150,000 yen depending on the unit count.

Reading the gaps, not just the entries

A repair log with nothing listed for 12 straight years on a 25-year-old building isn’t a sign of good luck – it’s a sign nothing was done. I’ve seen sellers present this as a selling point (low maintenance costs), when it actually means I’m about to inherit a decade of deferred work. On one property I nearly bought two years ago, the ledger showed exactly one entry in 11 years: a 40,000 yen faucet repair. I walked away, and a broker friend told me the buyer who did take it spent over 3 million yen on plumbing and exterior work in the first 18 months.

Red flags I’ve paid for before

A few patterns now stop me cold, because they’ve cost me real money in the past:

• Repeated small plumbing repairs (3 or more) in the same unit within 5 years – usually means a pipe section needs full replacement, not another patch
• Any water damage insurance claim without a matching repair invoice – the leak was likely never properly fixed
• A gap of more than 15 years since the last exterior waterproofing on a wood-frame building
• Renovation invoices with no contractor name or address listed – I can’t call them to ask what was actually done

When I see two or more of these on one property, I either walk away or drop my offer by an amount that covers the likely repair, usually somewhere between 5% and 12% of the asking price depending on what’s missing.

How I price the risk into my offer

I don’t try to get sellers to fix things before closing – that negotiation rarely goes well and slows everything down. Instead, I estimate the cost of the deferred work myself, using quotes from my usual contractors, and subtract that directly from my offer price. On a property I closed on last year, the roof was overdue by about 6 years; I got a rough quote of 1.4 million yen for the re-roof and offered 1.2 million yen under the asking price, splitting the difference on timing risk. The seller accepted within a week, since it was a cleaner number for them than negotiating specific repairs.

That’s the approach I use across all 9 of my properties – the repair history isn’t a formality, it’s the single document that tells me what I’m actually buying.

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